Option C (North-Eastern monsoon) is correct because the textbook clearly states that 'During October and November, northeast monsoon while crossing over the Bay of Bengal, picks up moisture and causes torrential rainfall over the Tamil Nadu coast, southern Andhra Pradesh, southeast Karnataka and southeast Kerala.' This occurs at the beginning of winters when most other parts of India do not receive rainfall. Option A is incorrect because the Tamil Nadu coast remains dry during the South-West monsoon season as it lies parallel to the Bay of Bengal branch and in the rainshadow area of the Arabian Sea branch. Option B is incorrect because temperate cyclones affect northwestern parts of India, not the Tamil Nadu coast.